In his treatise Kakyō (The Mirror of the Flower), the Noh master Zeami quotes a remark from the audience: senu tokoro ga omoshiroki, the moments where nothing is done are the interesting ones.
Zeami explains that these moments are the gaps between dance, song, speech and gesture. In them, the actor does not let his mind go. He keeps an inner attention that connects what comes before and after, and he should hide it even from himself.